Saniyalan (dumuni suguya) dilanni ni a kɛli nɛgɛma pipe inox .
1. Sɛgɛsɛgɛli min bɛ kɛ ni nɛgɛ ye min bɛ kɛ ni nɛgɛ ye .
Auger elektɔron spektroskopi (AES) ani X-ray spektroskopi (SPS) fɛɛrɛw fila bɛɛ bɛ se ka kɛ ka nɛgɛ intansi sanfɛla sɛgɛsɛgɛ walasa ka nɛgɛ pipe fitininw kɔnɔna ni kɛnɛma yɔrɔw sɔgɔli dɔn. AES fɛɛrɛ sɛgɛsɛgɛli cɛmancɛ ka dɔgɔ kosɛbɛ, min bɛ se ka dɔgɔya 20nm ma, wa a jɔyɔrɔ fɔlɔ ye ka danfara don fɛnw ni ɲɔgɔn cɛ. XPS fɛɛrɛ sɛgɛsɛgɛli ye 10μm ɲɔgɔn ye, o min bɛnnen don ka ɲɛfɔli kɛ dugukolo sanfɛla fɛnw ka chimie organique kan.
AES ni XPS detektɛriw bɛ kɛ ka skanɛrɛ kɛ dugukolo sanfɛ ani ka 316 nɛgɛdaga 316 sɔgɔ min bɛ fiɲɛ na. A bɛ fɔ ko nɛgɛ pipe sanfɛla sɛgɛsɛgɛli bɛɛ lajɛlen jugumanba min bɛ kɛ 15Nm ye, o ye 15nm ye, wa passivation treatment layer min bɛ tali kɛ o la, o jiralen don. composition, thickness ani a ka anti-corrosion seko, a ɲɔgɔnnaw.
Ka kɛɲɛ ni ɲɛfɔli ye, nɛgɛ min ka dɔgɔn, o bɛ ni chrome ni nickel caman ye, wa molibdɛni bɛ dɔw la (i n’a fɔ 316L00cr17ni14mo2), titanium, a ɲɔgɔnnaw, a ka c’a la, chromium 10,5% bɛ sɔrɔ min na, o bɛ se ka sɔgɔsɔgɔ ka ɲɛ. Corrosion resistance ka sababu kɛ chromium-rich passivation layer ka ladonni cogoyaw ye, passivation layer ka teli ka 3-5nm janya, walima a ka bon i n’a fɔ 15 layers de molecules. Passivation (passivation) layɛrɛ bɛ Sɔrɔ fiɲɛ oxydation-reduction (fiɲɛ oxydation-reduction) kɛcogo bɛɛ la, o min na chromium (kɔrɔmu) ni nɛgɛ bɛ oksidan Kɛ fiɲɛ fɛ. Ni passivation layer tiɲɛna, passivation layer kura bɛna bɔ joona walima galvanic cell principe bɛna bɔ o yɔrɔnin bɛɛ. Inox plates bɛna kɛ ni crevice corrosion jugu ye ani stress corrosion. Passivation layer ka resistance resistance bɛ tali kɛ ji hakɛ la min bɛ sɔrɔ inox plate kɔnɔ. Misali la, chromium, nickel ani molybdenum caman bɛ se ka dɔ fara danfara kan min bɛ se ka kɛ ni passivation layer sirili fanga ye ani passivation layer ka resistance resistance. A bɛ tali kɛ fana nɛgɛ yɔrɔw furakɛli la nɛgɛdaga pipew kɔnɔ ani jilafɛnw kɛli.
2. Surface erosion status of inox pipe fittings .
1. Sinsinnan yɔrɔ min bɛ CI-minɛn kɔnɔ, o ka passivation treatment layer ka nɔgɔn kosɛbɛ ka tiɲɛ, k’a sababu kɛ CI-Air ka oxydation potentiel caman ye. Passivation layer (passivation layer) min sɛbɛnnen bɛ, o bɛ to ka tiɲɛ dɔrɔn nɛgɛ fɛ. A ka c'a la, passivation layer bɛ tiɲɛ dɔrɔn passivation area de ??the inox. Etching nɔ bɛ bɔ dingɛ finmanw walima bɔgɔmuguw bɔli la. Etching fitinin min bɛ i n’a fɔ dingɛ min tɛ jɛnsɛn tuma bɛɛ fɛnɲɛnamafagalan sanfɛla la, o bɛ wele ko crevice corrosion. Kɔrɔya sɔgɔli hakɛ bɛ bonya ni funteni bɛ ka caya ani ka bonya ni a hakɛ bɛ caya. O fura ye ka baara kɛ ni karɔbɔni ye min ka dɔgɔ walima min tɛ ni karɔbɔni ye (i n’a fɔ litiri 316 litiri 304) .
2. Austenitic inoless nɛgɛ dilanni n’a welding waati la, nɛgɛ min bɛ kɛ nɛgɛ ye min tɛ sɔgɔ, o bɛ tiɲɛ nɔgɔya la. Ni funteni hakɛ ni funteni teliya bɛ kɛ fɛn dilanni ni a sɔgɔli waati la, o bɛ nɛgɛ sɛgɛsɛgɛli funteni hakɛ la (425-815°C ɲɔgɔn), karɔbɔni min bɛ kɛ ka ɲɛ, o bɛ fɔlɔ ka se kristalɛ suman dancɛ ma, ka fara ɲɔgɔn kan ni chromium CRC R2-3C O cogo la, karɔbɔni jɛnsɛnni hakɛ min bɛ sɔrɔ ɔsitɛni na, o ka bon ni chrome ta ye, wa chromium tɛ se ka chromium tununnen musaka bɔ k’a sababu kɛ chromium carbide sɔrɔli ye kristalɛ suman dancɛ la. O de kosɔn, kristalɛ suman dancɛ kɔrɔ bɛ bonya ni chromium carbide sɛgɛsɛgɛli ye ani ka dɔgɔya ni a ni etch fɛnw bɛ ɲɔgɔn na i n’a fɔ ci- fɛn na, o bɛna kɛ sababu ye ka batiri micro rechargeable (batiri min bɛ se ka charge) kɛ. Nɔgɔ ye kristalɛ kisɛw sanfɛla dɔrɔn de ye, o bɛ don teliya la kɔnɔna na ka kɛ nɔgɔ ye min bɛ kɛ ɲɔgɔn fɛ. Pipe minnu bɛ kɛ ni nɛgɛ ye kosɛbɛ, olu bɛ ye ka caya kuran sɔgɔli la.
3. Stress corrosion cracks: O ye nɔ bɛɛ ye min bɛ sɔrɔ data ground stress ni erosion statiques fɛ min bɛ kɛ sababu ye ka faraw ni nɛgɛw falen. Sigida lamini min bɛ degunw sɔgɔli ni tiɲɛni bila mɔgɔ la, a ka c’a la, o ka gɛlɛn kosɛbɛ. A tɛ dan dugukolo degun dɔrɔn ma, nka a bɛ kɛ dugukolo degun ni kɔnɔna degun fana ye min bɛ sɔrɔ a dilanni fɛ, kuran sɔgɔli walima a fagacogo ani a nɔgɔyali nɛgɛmafɛnw na.
3. Jɛɲɔgɔnya min bɛ nɛgɛ kɔnɔna ni kɛnɛma yɔrɔ furakɛli ni nɔgɔ pipe fitininw ka sɔgɔli ni ɲɔgɔn cɛ .
Pipe fitininw kɔnɔna ni u kɔkanna laminiw (minnu ka ca i n’a fɔ kemikɛli, sɔgɔli ani polisi) bɛ kɛ ni passivation furakɛli layɛrɛ ɲumanw ye, minnu bɛ se ka sɔgɔsɔgɔ kosɛbɛ. Kɔnɔna ni kɛnɛma yɔrɔw bɛ nɔgɔya ka bon, wa fɛnw nɔrɔli ka dɔgɔ kosɛbɛ, o min nafa ka bon ka ɲɛsin nɔgɔ bɔli ma. Ni jimafɛn min bɛ ni a ɲɛda gɛlɛya ka bon, o bɛ mara tubabufura la, a ka fisa ni saniya ye, kɛrɛnkɛrɛnnenya la furakɛli baara la.
1. Tubabu kɔnɔna na: elektrɔliji sɔgɔli) : kuran sɔgɔli ji ye asidi fosifɔriki ye, asidi sulfuriki, asidi kuromiki, jelatini, potasiyɔmu dikɔrimu, a ɲɔgɔnnaw, nɛgɛ min tɛ nɔgɔ ye, o kɔnɔna bɛ anodize, ani ji min bɛ kɛ ka a sɔgɔ, o bɛ tɛmɛ degunba kan ka kɛ fɛn ye min bɛ se ka wuli. Nin waati in na, tubabu kɛnɛma bɛ ka taabolo fila danfaralenw kɛ, o kɔrɔ ye ko nɛgɛ intansi passivation passivation layer (jirimugumugu fana sen bɛ o la). O bɛ kɛ bawo, sɔrɔko siratigɛ la, fɛn minnu bɛ bɔ dugukolo sanfɛ, olu ka bɔnɔgɔla ni u ka baara kɛcogo la, o cogoya tɛ kelen ye, wa oksidan anodikɛli bɛ wuli. K’a sababu kɛ filimuw dilanni ni u ka baara kɛcogo danfaralenw ye, minnu bɛ kɛ ni fɛnɲɛnamafagalanw ye minnu bɛ wele ko convex convex ani concave, ani anɔdi wulili, nɛgɛ kɔgɔ hakɛ bɛ to ka caya anɔdi yɔrɔ la, o bɛ kɛ sababu ye ka ɲɛgɛnɛsiralabanaw kunbɛn kosɛbɛ. Danfara min bɛ filimu janya la konvex ni concave yɔrɔw la, o bɛ na ni anodized surface layer ka kuranba ye, induction électrostatique teliya la, ani waati kunkurunnin kɔnɔ, o bɛ tɛmɛ laɲini kan ka bɔ kɛnɛma sɔrɔko yɔrɔba la, wa a bɛ se ka tɛmɛ ra≤ Wa nin nɔ sugu in kɔnɔ, pipe sanfɛla ka kuromu ji hakɛ bɛ caya, ani nɛgɛ min tɛ sɔgɔ, o bɛ se ka kɛ sababu ye ka passivasiyɔn furakɛli layɛrɛlafili kɛ.
Polishing ka ɲumanya faamuya cogo ka kan ka ɲɛsin litiyɔmu batiri elekitoroliti furakɛcogo gundo ma, a hakɛ, a funteni, a plugin waati, a ka sisan fanga, a ka kuran hakɛ, ani tubabukan na nɛgɛw furakɛli hakɛ. Ni nin fɛɛrɛ in ma dɔn kosɛbɛ, o bɛna pibiliki sanfɛla nɔgɔya tiɲɛ na. Ni elekitorolizi fɛɛrɛ bɛ nivoya kojugu, a bɛna kɛ yɔrɔ caman na minnu bɛ kɛ ni konvex ani concave ye, ani hali tubabukan kelen-kelen bɛɛ bɛna wari caman sara. A jogo lakika ka kan ka kɛ fɛɛrɛko ye ani a musaka ka bon kosɛbɛ.
2. Tubabu kɛnɛma yɔrɔ sɔgɔli ni a polisi: sɔgɔli ni sɔgɔli ni wuli ni layini paralɛliw ye. Nin yɔrɔ in na, ka masinw ka sɔgɔli kɛ ni misali ye, masinw sɔgɔli minɛnw ka nɔgɔn kosɛbɛ, fanga ni sɔgɔli disikiw ni sɔgɔliminɛnw kɔrɔlenw ka nɔgɔn kosɛbɛ, fanga ni sɔgɔli disikiw, ani sɔgɔli kɛcogo kɔrɔlen. Fini disiki ni fini disiki min dilannen don ni cɛncɛn finmanw ye minnu bɛ graded, olu bɛ sɔgɔ ka taa ɲɛfɛ ka segin pipe kɔnɔna ni kɛnɛma yɔrɔw la siɲɛ caman, wa a laban bɛ se ka se ra ≤ 0,2-0,4μ m
Ni an y’a suma ni elekitorolitiki sɔgɔli ye, masinw sɔgɔli bɛ kɛ ka caya k’a sababu kɛ a ka minɛn nɔgɔmanw ye, a ka baarakɛcogo ka dɔgɔ, a minɛni ka nɔgɔn, a dunni musaka ka dɔgɔ, wa a tɛ tiɲɛni kɛ tubabukan na. Nka, surface printing layer (yɔrɔ min bɛ sɛbɛnni kɛ) ka resistance (nɔgɔya) ka fisa kosɛbɛ ni elekitoropoli ye.
Tubu nɛnɛma min bɛ wuli, o nafa ka bon kosɛbɛ, o kɔrɔ ye ko sɔrɔta hakɛ ka bon kosɛbɛ, wa a man ɲi ka wuli ani ka kurukuru. Ni an b’a fɔ k’a jɛya, a tɛ jamana ka izini sariya dafa, o la, thermosolidification (sɔgɔsɔgɔninjɛ) ka kan ka kɛ.
3. Gazi-labɛn-bɛrɛn-bɛrɛn-furakɛli: A bɛ Kɛ yɔrɔ fla ye: Annealing foro farikolo jɛlen ani amoniyaki-yɔrɔ-ko-minɛnw dafalen.
Annealing furnace bright: key structure bɛ kɛ ni ring-shaped cross-section muffle tank ye, ani funteni fɛɛrɛ min bɛ ni funteni caman ye minnu bɛ labɛn a fan fila bɛɛ la ani duguma dakunw na. Gazi min bɛ bɔ amoni la, o bɛ kɛ watara ye min bɛ kɛ ni watara ye ani min bɛ kɛ ka ji nɛnɛ gazi bɔ. Pipu minnu bɛ nin funteni furakɛli fɛɛrɛ in na, olu man kan ka mɔ ani ka kɛ fɛn ye, o min bɛ a to kɔnɔna ni kɛnɛma yɔrɔw ka nɔgɔya ani ka pipe surface (pituw) yɔrɔ min bɛ sɔrɔ sɔgɔli fɛ, o ka nɔgɔya dɔɔnin. Sabula nin ko jugu ninnu bɛna kɛ sababu ye ka pibiliki dɔgɔya sigida saniya pipew sanfɛla nɔgɔlenw na. O la, aw bɛ lakana yɔrɔ dɔ sugandi min bɛ yeelen bɔ annealing foro la. Hangao Tech ka . Gazi min bɛ mɔgɔ tanga hakili ma, o bɛ yeelen bɔ. A bɛ i magow ɲɛ kosɛbɛ, a tɛ dan fiɲɛ tɛ se ka baara kɛ dɔrɔn, nka a bɛ se ka baara kɛ kosɛbɛ fana ani ka fanga mara. Ni an y’a suma ni minɛn suguya kelen ye, a bɛ se ka 20%-30% ɲɔgɔn bɔ fanga sɔrɔli la.
